WO1988003215A1 - Structure anti-vibrations - Google Patents

Structure anti-vibrations Download PDF

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Publication number
WO1988003215A1
WO1988003215A1 PCT/JP1987/000828 JP8700828W WO8803215A1 WO 1988003215 A1 WO1988003215 A1 WO 1988003215A1 JP 8700828 W JP8700828 W JP 8700828W WO 8803215 A1 WO8803215 A1 WO 8803215A1
Authority
WO
WIPO (PCT)
Prior art keywords
rubber
restraining
seismic isolation
load
vibration
Prior art date
Application number
PCT/JP1987/000828
Other languages
English (en)
Japanese (ja)
Inventor
Teruo Sasaki
Yoshiaki Miyamoto
Mitsuo Miyazaki
Fumiaki Arima
Makoto Sakuraoka
Hisaya Tanaka
Original Assignee
Sumitomo Gomu Kogyo Kabushiki Kaisha
Sumitomo Kensetsu Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Gomu Kogyo Kabushiki Kaisha, Sumitomo Kensetsu Kabushiki Kaisha filed Critical Sumitomo Gomu Kogyo Kabushiki Kaisha
Priority to KR1019880700731A priority Critical patent/KR970005011B1/ko
Priority to DE8787907130T priority patent/DE3769980D1/de
Publication of WO1988003215A1 publication Critical patent/WO1988003215A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E04H9/022—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising laminated structures of alternating elastomeric and rigid layers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/36—Bearings or like supports allowing movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/0023—Purpose; Design features protective

Definitions

  • the present invention relates to a seismically isolated type seismic isolation device for mounting and supporting a structure to reduce an earthquake input and to perform vibration isolation. More specifically, an elastic body, a viscoelastic body, or a viscous body is used as a load body. Used, with its outer circumference surrounded by binding materials in a stacked configuration, giving a large vertical rigidity while maintaining a large horizontal deformation capacity, and allowing seismic isolation and vibration isolation of structures and equipment It relates to a restraint type spiritual device.
  • Laminated rubber pairings have begun to be widely used as seismic isolation devices for structures such as buildings, and they are roughly classified into three types.
  • a rubber plate (1) with a low compression set such as natural rubber and a rope (2) are alternately laminated.
  • (X) the ratio of vertical compression stiffness to horizontal shear stiffness is extremely large, so that seismic energy can be transmitted to structures while supporting heavy citric structures with good stability against ground haze. Make it smaller.
  • the second tie provides the effect of absorbing vibration energy in the laminated structure used for the first type of laminated rubber bearing, as shown in Figs. 30 (a) and (b). It is a lead-laminated rubber bearing (Y) with a lead plug (3) penetrating in the height direction (Japanese Patent Publication No. 61-17984).
  • This type has a history due to the plastic strain of lead encapsulated inside, as shown in the load-displacement curve shown in Fig. 31. Reduce the vibration amplitude of structures caused by earthquakes and attenuate them quickly.
  • the first type of laminated rubber bearing (X) has a very small vibration damping ability, and if it is used as it is, the vibration amplitude of the structure during an earthquake will be large and lack safety. Therefore, usually, a separate damper is arranged and used in parallel. In this case, the point of action of the restoring force and the point of action of the damping force are different, and there is a risk that unnecessary torsional vibration may be applied to the structure. '
  • the second type lead-laminated rubber bearing ( ⁇ ) has a large initial shear stiffness against micro-vibration as shown in the characteristic (S>) in Fig. 31 because the lead plug 3) has Poor vibration damping performance causes transmission of traffic shaking caused by the passage of vehicles, etc. Therefore, it was difficult to apply it to buildings and floors where equipment that dislikes vibration was installed. There were also problems such as the slow recovery of the iD surface to the origin after large deformation ⁇
  • the third type of high-damping laminated rubber bearing (Z) has a high level of creep and a poor restoring force against horizontal displacement, and is particularly reliable for long-term use. There are low issues. In addition, the amount of creep differs for each of the high-damping laminated rubber bearings that are installed side by side. There is also a problem that unnecessary stress is generated in the structure.
  • the present invention has been made in view of the actual situation of the above-mentioned waste rubber bearings (X), (Y), and (Z). Based on a fundamentally different structure and principle, the above problems have been solved. He is trying to propose a digging device.
  • the present invention proposes a newly proposed seismically isolated seismic isolation
  • a load body disposed under the structure to support the vertical load
  • a constraining member that is arranged in a stacked manner in the height direction and that includes a constraining material that exhibits high rigidity against tensile force, and that restrains the bulging of the packaged article described above to the outside.
  • the above-mentioned cloud-free device has a large deformation capability due to elasticity, viscoelasticity, or viscosity in the horizontal direction when a load formed by an elastic body, a viscoelastic body, or a viscous body is restrained by surrounding restraints. Demonstrates the ability to support loads due to vertical rigidity. Then, the restraining body and / or the loaded body exhibit the vibration energy absorbing effect mainly by frictional damping. The vibration absorbing effect is, Yes even for micro-vibration: to be the case.
  • the vertical load is mostly borne by the load, and the energy absorption is mainly performed by the frictional decay of the restraint and / or the load.
  • the mechanism is different from that of the laminated rubber bearing (Y) in this book. * ⁇ In the Ichizumi Maro rubber bearing (Y), the vertical load is borne by the laminated body of the surrounding braid and rubber plates. Because energy absorption is performed by plastic deformation of lead Is
  • the working point of the restoring force and the working point of the decay force become the same point, and unnecessary torsional vibration is not applied to the structure.
  • the device of the present invention as a damper, "" as an integrated seismic isolation device, exhibits the same or better performance as the conventional laminated rubber pairing (X) (Y) (Z).
  • FIG. 1 to 4 show a seismic isolation device A according to an i-th embodiment of the present invention, in which FIG. 1 is a sectional view showing a basic structure, and FIGS. 2 and 3 are application examples. Plan view and cross-sectional view, and FIG. 4 is a nao view showing another application example >>
  • FIGS. 5 to 9 show a seismic isolation device B according to a second embodiment of the present invention.
  • FIG. 5 is a sectional view showing the basic structure
  • Figure 6 is a plan view of the same
  • Figure 7 is a partially enlarged sectional view of Figure 5
  • Figure 8 is a perspective view showing a restraining wire.
  • FIG. 9 is a partial sectional view showing another example of the configuration of the peripheral portion of the load body.
  • FIGS. 10 to 17 are diagrams illustrating a seismic isolation device C according to a third embodiment of the present invention.
  • FIG. 15 to FIG. 6 are load-displacement curves when the materials of the rubber-like material and the anti-friction material used as the load are changed in the specific example of manufacture shown in FIG.
  • FIGS. 18 to 25 are views showing a seismic isolation device SD according to a fourth embodiment of the present invention.
  • FIGS. 18 (a) and (b) are plan views showing a first structural example (D t ). It is a figure and a sectional view.
  • FIGS. 19 (a) and (b) show examples of manufacturing (d,) of the first installation example (D t) shown in FIGS. 18 (a) and (b), and (a) is a plan view thereof.
  • (B) is a sectional view.
  • FIGS. 20 (a), (b) to 25 (a), (b) show second to seventh structural examples of the fourth embodiment, where fa of each ⁇ is a plane ⁇ , (B) is a sectional view.
  • FIGS. 26 to 28 are views for explaining a seismic isolation device E of a constrained surrounding type according to a fifth embodiment of the present invention.
  • FIGS. 26 (a), (b) and 27 (a) ( b) shows the first and second configuration examples, respectively, wherein (a) of each figure is a plan view, and (b) of each figure is a cross-sectional view.
  • FIG. 29 to FIG. 30 show a conventional example.
  • 29 (a) and (b) show a laminated rubber bearing (X) or a high-density laminated rubber pairing (Z),
  • (a) is a plan view, and
  • (b) is a cross-sectional view.
  • Figures (a) and (b) show a pair of lead eyebrow rubber pairings (Y), with a (a) a plan view and (b) a cross-sectional view. This is the displacement curve of the loading rubber bearing (Y).
  • the device of the present invention has many embodiments corresponding to the difference in the structure of the restraining body. Have. These will be described below in order.
  • Chu-hachi in the first embodiment is the first solid which also shows its cross section.
  • the loading body (11) using a columnar rubber material showing elasticity or viscoelasticity, and the restraining body (12) are also composed
  • the constraining member is composed of a constraining plate (13) distributed around the west.
  • the rubber-like body serving as the loading body (11) is formed not only in a columnar shape but also in an arbitrary planar shape such as a prism, and the material is natural rubber, its inducer, and various synthetic materials. All rubber and rubber-visco-elastic elastomers such as rubber and rubber are available.
  • the rubber-like material as the loading body (II) is used alone, it is particularly necessary to use two-butadiethylene rubber, isobutylene-isoprene rubber, and “bo-norbo” rubber, which have conventionally been obstacles to lamination.
  • High-decay rubber such as nene, c-saturated butyl, etc. can also be used if necessary; around the loading body (11) using a rubber body, a restraining body (12) is used. The bulge to the side is also!
  • the load body (11) and the yokan device ⁇ exhibit high vertical rigidity and a large vertical load supporting capacity, and at the same time, possess a large horizontal deformation capacity such as low horizontal strength.
  • the restraining plate (13), which is the restraining material that constitutes (12), is made of a rigid material, mainly loos, which restrains the expansion of the rubber segment, which is the load (II), with a large force. Is done.
  • the restraining body (12) in FIG. 1 is constructed by simply stacking a plurality of steel plates on a restraining plate (13). An application example of the first embodiment is shown.
  • the rigidity and damping performance of the seismic isolation device A can be arbitrarily adjusted by connecting one or more sheets in a spiral as shown in Fig. 4 to form a continuous body. .
  • the method of treating each sheet of the constraining plates U3) to be laminated may be either a method of directly laminating or a method of coating or laminating with rubber having a small compression set.
  • the upper structure is attached to the upper and lower surfaces of the seismic isolation device A of the first embodiment shown in FIG. 1, that is, the upper and lower surfaces of the rubber body as the load (11), respectively.
  • the lower part is formed by joining fixing plates (14) and (14) fixed to the structure.
  • Steel plate is mainly used for fixing plate (14) as well as restraint plate (13).
  • a plurality of constraint plates (13) composed of a plurality of ⁇ plates are stacked to form a constraint ⁇ (12), while the application example of FIG.
  • the constrained body (12) is constructed by forming 13) into spiral ⁇ .
  • the first embodiment has a configuration in which a rubber-like body is used alone as described above, and a laminated restraint plate (13) is arranged as a restraint (12) around the rubber-like body. The effect can be obtained.
  • the rigidity and damping performance of the device can be arbitrarily adjusted according to the lamination state of the constraint plates (13). In addition, they can be designed in a wide range of characteristics with a damper-type seismic isolation device.
  • the rubbery body as the loading body (11) has high durability and fire resistance because the outer periphery, and furthermore, the upper and lower parts are protected by steel plates and the like.
  • the seismic isolation device B of the second embodiment has a columnar shape as shown in FIGS. 5 and 6. This is the same as the first embodiment in that a restraining body (12) for restraining outward bulging is disposed around a loading body (li) using a rubber body.
  • the feature of the second embodiment is that the restraining member (12) is wound around the load (II) continuously or intermittently in the height direction in a stacked manner. It is composed of a large number of constraint wires (15).
  • a PC wire, a wire cord, or the like is used for the restraining wire (15)-, which is a restraining material, and the load (11) is restrained as shown in FIG.
  • the wire forests (15) are arranged in layers in the height direction and side by side in the model direction.
  • Fig. 8 Assembling of the restraining wire (15)
  • each restraining porcelain (15) is made spiral and arrested in the height direction to arbitrarily adjust the trocar B's ruggedness and decay performance. If necessary, seismic isolation device B can be integrated with a damper.
  • the outer periphery of the constraint wire forest (15) is covered with an elastic body (16) having a small compression set, such as natural rubber or synthetic rubber, as necessary, to be protected.
  • This elastic body (16) is integrated with the restraining wire (15) by vulcanization bonding or the like.
  • Fig. 9 shows a case where a group of constrained line forests (15) and elastic bodies (16) are alternately arranged vertically to form a layer around the load U1) made of rubber. This is an example.
  • the second embodiment has a configuration in which a rubber-like body is used alone as a loading body, and this is restrained by a number of binding wires (15), which are binding materials disposed around the rubber-like body. Therefore, the same effect as in the first embodiment can be obtained.
  • the vibration energy is absorbed by the frictional energy of the restraining plate or wire.
  • Any type may be used, but when fixed with a rubber-like elastic material having a small compression set, it is preferable that the center rubber-like material has high attenuation.
  • the seismic isolation device C of the third embodiment is a further development of the seismic isolation device ⁇ of the first embodiment bowl.
  • FIG. 10 shows a Narurei (C) (C a) ( C 3), columnar ⁇ rubber saphenous #: use the The structure of each of the constraining bodies (12) arranged in a stack around the loaded body (11) is different. ": Here, the vertical load of the structure, which is placed in the center: receives the weight.
  • (12) is the rubber-like elasticity of the ring with small compression set.
  • One side of a plate (18) and a ring-shaped restraining plate (19) such as a steel plate as a restraining material are fixed to each other, and laminated with an anti-friction material (20) therebetween.
  • fixing refers to laminating or vulcanizing adhesion.
  • FIG. 11 a second configuration example shown in (b) (C 2) (12) is on the front and back surfaces of the small-ring-shaped rubber ⁇ resistant plate having compression set (21),
  • a ring-shaped restraining plate (22) such as a steel plate, which is a restraining material, is fixed one by one to form a three-layer structure, which is laminated with an antifriction material (20) 'interposed therebetween.
  • the Figure 12 (a) constraint of the third configuration example shown in (b) (C 3) (12) is on the front and back surfaces of the-ring-shaped restraining plate such as a steel which is constrained material (23), This is a ring-like rubber-like elastic plate (24) with a small compression set, fixed one by one to form a three-layer structure, and laminated with an anti-friction material (20) in between.
  • the restraining plates (19), (22), and (23), which are the restraining members need only be those having high rigidity and high strength against breakage, and materials other than the backing plate can also be used.
  • the rubber-like elastic plates (18), (21), (24) having a small compression set may be elastic bodies having the same properties as the rubber material. Desirable amount of compression set for exerting the effective function of the restraint (12) is 35% or less by 70'C-22HR heat treatment based on JIS-K6301. Show.
  • the antifriction material (20) may be any material that reduces the difference between the static friction and the dynamic friction between the restraint plates.
  • a resin having a small friction coefficient such as silicone grease, Teflon, or the like, or A member impregnated with lubricant is used.
  • the mounting of these anti-friction materials (20) depends on their properties.
  • the ⁇ - constraint body (12), which is applied, covered, or imposed on the moving surface of the rubber elasticity is not limited to the above-described configuration example. It is only necessary that a rubber elastic treatment having a spacer function is surface-coated on the plate and these are laminated with a friction material interposed therebetween, for example, the rubber material as the loading body (11) has a prismatic shape. If available, restraint
  • the planar shape is a corresponding square shape.
  • the restraining body (12) may be formed by spirally bending a restraining plate on which a rubber-like elastic plate is surfaced to form a laminated state.
  • Third Base is a first preparation example of real ⁇ to 3 ⁇ 4 to the 1313 ⁇ 4, ⁇ (25), which corresponds to the example the basic configuration described in FIG. 10 previously (C 4), the upper Fixing plate (26) (26.) fixed to the structure and lower structure. Between the ⁇ , a rubber-clad body (11) as the loading body (11) and a restraining body (12) surrounding it It is fixed.
  • the loading body (U) using a rubber body is made of natural rubber or highly attenuated rubber with a tan of about 0.3, which is a natural rubber or highly attenuated rubber. Isoprene rubber was used.
  • the restraint plate (19) that constitutes the restraint (12) is
  • the thickness ratio of (18) is set to 2: 1. Silicone grease with a viscosity of 300,000 cSc (at 25) or a teflon resin sheet is used for the antifriction material (20).
  • the location (28) is an example basic configuration described in FIG. 11 previously (C 2.) Yes.
  • the restraining body (12) has a three-layer structure in which a rubber-like elastic body (21) is sandwiched between two restraining plates (22) and (22). That is, they are formed by lamination.
  • the thickness ratio between each restraining plate (22) and the rubber elastic plate (21) is 1: 1.
  • Fig. 15 shows the characteristics when the material of the rubber body as the load (11) is natural rubber (NR) and the antifriction material (20) is silicone grease.
  • Fig. 16 shows that the material of the rubber body as the loading body (11) is made of high-damping rubber.
  • FIG. 17 shows the characteristics when the material of the rubber body as the loading body (11) is a high damping rubber and the antifriction material (20) is a Teflon resin sheet.
  • the seismic isolation device (28) which is the second production example, the load
  • the seismic isolation device C of the third embodiment of the present invention has the same or higher performance than the conventional laminated rubber bearing. It was revealed
  • the seismic isolation device D of the fourth embodiment is a high-density rubber such as isobutylene-isoprene rubber or polynor-bonenen as the rubber-like material used as the load (11).
  • the low restoring force of the aging rubber is captured by the restraining body (12), and the selection range of the rubber is widened.
  • the first structural example (D t ) is a high-damping rubber carrier sandwiched between the upper and lower receiving pressures (30) and (30). ⁇ 11) is sealed in a through hole (31) formed in the vertical direction of the restraining body (12), and the restraining body (12) is made of a rubber-like elastic body (32) with a small ring with a small compression set.
  • Ring-shaped hard body such as a steel plate as a restraining material
  • the cylindrically loaded body (11) made of high-strength rubber is surfaced between the pressure bearings (30) and (30). Further, each rubber-based body (32) of the constraining body (12) is connected and integrated on the inner surface which is in close contact with the outer peripheral surface of the loading rod (11). It protrudes only on the outer periphery of.
  • the high damping rubber used for this load (11) is a vorynorborne rubber with a tan of about 0.8 at a temperature of 25 and a frequency of 0.5 Hz.
  • the decay constant of the seismic isolation device D in the production example (d) is about 0.13, which is a comparative example of the laminated rubber bearing.
  • the seismic isolation device D of the fourth embodiment has many other structural examples, and will be described sequentially.
  • FIG. 20 As in the case of the first structural example shown in Fig. Certain height ⁇ rubber restraint (12) in the vertical direction through the installation structures - as the ones, a second structure example shown in FIG. 20 (a) (b) (D 2>, and FIG. 21 There is a third structural example (D 3 ) shown in (a) and (b).
  • These structural example (D *) (D beta) is had ⁇ a hole of a rigid body as a constraint to the ,, restraint (12) (33a), a high is due connexion loading member (11) to The decay rubber is completely partitioned vertically.
  • the fourth structural example (D 4 ) uses a small amount of highly decay rubber of a flat plate as the loading body (11) ⁇ .
  • the fifth mounting example (D s ) uses a restraining body (12) Is made into a square pillar shape, and four high-attenuated rubbers are arranged on the same plane as the load (11).
  • the fourth embodiment is characterized by the features of each part that appears in each of the above structural examples. Can be implemented in various structures by combining them in different formats.
  • the rubber-like elasticity used for the restraining body (12) is as follows; Is needed to give the restraint (12) adequate restoring force. This is especially true for those with less than 20% giving good properties.
  • the highly damping rubber used for the load (11) has a loss (TAN) at a temperature of 0.5 ⁇ and a dynamic strain rate of 0.5% at one 10 to 40'C in the range of 0.1 to 1.5. If the preferred loss (TAN, ⁇ ) exceeds 1.5, the vibration damping performance in the vertical direction above iOHZ becomes poor, and if it is less than 0.1, it does not contribute much to the improvement of the damping performance in the horizontal shear direction.
  • the constraining body (12) is integrated, and the loaded body (11) in the city is straight and uniform over the entire peripheral surface. Because it is constrained, it is possible to use high-pressure rubber with a large compression set in a stable state without a cleaving phenomenon. It has the characteristic of giving an appropriate horizontal restoring force to the seismic isolation device by the force 0
  • the vertical load is mostly borne by the high-decay rubber, which is the load (11), and the energy absorption is mainly caused by the molecules of the high-damping rubber.
  • the mechanism is essentially different from the conventional lead-laminated rubber bearing (Y) shown in Fig. 30 in that it is performed by friction. This is because in the lead-laminated rubber pairing (Y), the vertical load is borne by the laminate of the surrounding rubber plate and the thin rubber plate, and the energy absorption is performed by the plastic deformation of lead. .
  • the seismic seismic isolation device ⁇ of the fifth embodiment uses a viscous fluid as the load body (11), and restricts bulging to the outside by the constraining body (12). While giving large vertical to the rubber, the restoring force against horizontal deformation is given by the rubbery material with little compression set that constitutes the restraint. And the damping action is mainly given by molecular rub friction of viscous fluid.
  • seismic seismic isolation device E of the fifth embodiment which is the fifth embodiment, will be described in (1) below as the first to third configuration examples.
  • the upper and lower pressure receiving ⁇ ( ⁇ ) are formed in the cavity (35) formed in the vertical direction of the cylindrical ⁇ restraining body (12).
  • a viscous fluid, which is the loaded body (11), is enclosed in the state easily sandwiched in (36).
  • the elastic body bag (37) is fitted with a pressure receiving plate (36) using a bag fixing flange (38) (38). ).
  • This restraint (12) is obtained by bonding and laminating a rubber-like elastic body 39) with small compression set and a ring-shaped or spiral-shaped hard restraining material (40) by vulcanization bonding or bonding. .
  • a wire such as a ⁇ wire may be used as the restraining material.
  • the ring-shaped pressure receiving plates (41) and (41) are separately provided on the upper and lower surfaces of the restraining body (12) in consideration of the convenience of assembly. ) May be integrated with a viscous fluid pressure receiving plate (36) (36).
  • the second configuration example shown in FIGS. 27 (a) and (b) is a modification of the embodiment shown in FIGS. 26 (a) and (b) in which the flow of the viscous fluid as the load (11) is restricted.
  • a plurality of viscous fluid shear resistance plates (42) are arranged in parallel.
  • the viscous fluid shear resistance plate U2) is connected at predetermined intervals by a rubber-like elastic body (43), and is supported by a bag fixing flange (38).
  • the shear resistance of the viscous fluid as the load (11) is effectively transmitted through the rubber-like elastic body (43).
  • the upper and lower pressure receiving plates (36) and (36) are transmitted to the viscous fluid.
  • the gap of the plate (42) is kept constant to improve the damping function.
  • FIGS. 28 (a), (b) and (c) show a third example of the configuration of the seismic isolation device (E) of the constrained surrounding type according to the fifth embodiment of the present invention.
  • the viscous fluid as the load (11) may be sealed in a plurality of chambers, and the viscous fluid shear resistance plate (42) is integrally formed with the hard restraining member (40). And the like.
  • the viscous fluid as the load (11) is directly enclosed in the constraint (12). This can be achieved by making the cavity (35) of the restraining body (12) airtight. This is because the elastic bag (37) is not always necessary. .
  • the outer plates () and (44) for joining the structure and the foundation are attached to the pressure receiving plates (36) and (36) so as to fit outside.
  • the pressure receiving plate (36) is formed with a sealing hole (45) for sealing the viscous fluid as the loading body (11), and the sealing hole (45) is closed by screwing a bolt (46).
  • Each viscous fluid cutting resistance plate (42) is provided with a through hole that is not visible, allowing the injection of viscous fluid to be loaded (U).
  • the configuration of the third configuration example is based on the same concept as the second configuration example.
  • viscous fluid shear resistance plates (42) (42)... are provided at small intervals y to positively enhance the effect of the molecular motion of the viscous fluid.
  • This structure has an improved damping effect.
  • the damping capacity according to the gradient (dvZdy) between the fluid shear resistance plates U2) is obtained. There is a feature that is.
  • the hard constrained forest U0 is completely embedded in the bundle (12), and in the third configuration, the example protrudes in the opposite direction.
  • any shape can be adopted.
  • the desired pressure of the rubber-like elastic body (39) used for the restraining body (12) The amount of permanent set is 35% or less by the 22Hfi heat treatment based on JIS-K6301 and is required to give the restraining body (12) an appropriate restoring force. This gives good properties, especially below 20%.
  • the viscous fluid used as the loading body (11) has a higher damping capacity as the kinematic viscosity is larger, but a material of 1000 St to 100,000 St is preferable to provide an appropriate damping function.
  • the seismic isolation device of the present invention uses a non-laminated elastic body, viscoelastic body, or viscous body to exert a large force directly loading forceps, eliminates the disadvantages of the conventional laminated rubber bearing, and replaces it. '' Can be used *
  • the seismic isolation device of the present invention does not use a material with high initial rigidity, such as lead, to obtain a reduction function.
  • the selection range is wide, and it is possible to design the characteristics in a wide range. Therefore, in addition to seismic isolation and vibration isolation of buildings, it is also suitable for seismic isolation and isolation of floors in buildings, and for power transmission equipment and general equipment.

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  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

Structure anti-vibrations (A) permettant de protéger une structure supérieure contre l'énergie d'un tremblement de terre et contre les vibrations dues à la circulation. Cette structure est réalisée en plaçant une structure supérieure sur une structure de base qui la supporte, de sorte que la structure supérieure puisse être déplacée horizontalement, en prolongeant le cycle de vibrations naturel de la structure supérieure. Un corps de support de charge (11), composé d'un corps élastique, d'un corps visco-élastique et d'un corps visqueux ne présentant essentiellement aucune rigidité propre, est entouré d'un organe de retenue (12) empêchant le corps de support (11) de se déformer en se bombant vers la surface circonférentielle externe. Le corps de support (11) peut ainsi développer une rigidité verticale élevée tout en maintenant sa déformabilité, et l'énergie vibratoire est absorbée par l'effet d'amortissement entre l'organe de support de charge (11) et l'organe de retenue (12).
PCT/JP1987/000828 1986-10-28 1987-10-28 Structure anti-vibrations WO1988003215A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019880700731A KR970005011B1 (ko) 1986-10-28 1987-10-28 주위구속형의 면진장치
DE8787907130T DE3769980D1 (de) 1986-10-28 1987-10-28 Schwingungswidrige struktur.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP25639786 1986-10-28
JP61/256397 1986-10-28
JP11729687 1987-05-14
JP62/117296 1987-05-14

Publications (1)

Publication Number Publication Date
WO1988003215A1 true WO1988003215A1 (fr) 1988-05-05

Family

ID=26455439

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1987/000828 WO1988003215A1 (fr) 1986-10-28 1987-10-28 Structure anti-vibrations

Country Status (4)

Country Link
EP (1) EP0287683B1 (fr)
KR (1) KR970005011B1 (fr)
DE (1) DE3769980D1 (fr)
WO (1) WO1988003215A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2927301B2 (ja) * 1989-08-01 1999-07-28 住友ゴム工業株式会社 周囲拘束型免震支承
JPH06101740A (ja) * 1992-08-07 1994-04-12 Sumitomo Rubber Ind Ltd 積層ゴム支承
NZ245378A (en) * 1992-12-04 1997-04-24 Damping Systems Ltd Substitute Bearing with plastically deformable core and surround which hydrostatically pressures the material of the core at or beyond its shear yield stress and methods of making
US7565774B2 (en) * 2004-12-07 2009-07-28 Bridgestone Corporation Seismic isolation apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59179907A (ja) * 1983-03-30 1984-10-12 吉田　英一 構造物用弾性支承体

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2921828C2 (de) * 1978-05-31 1983-02-10 Freyssinet International (S.T.U.P.), 92100 Boulogne-Billancourt, Hauts-de-Seine Auflager mit hoher innerer Dämpfung für Bauwerke
SE436480B (sv) * 1983-05-05 1984-12-17 Volvo Bm Eftergivligt, kraftoverforande element
JPH0792111B2 (ja) * 1985-06-19 1995-10-09 隆史 藤田 振動エネルギ吸収装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59179907A (ja) * 1983-03-30 1984-10-12 吉田　英一 構造物用弾性支承体

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0287683A4 *

Also Published As

Publication number Publication date
EP0287683B1 (fr) 1991-05-08
KR970005011B1 (ko) 1997-04-11
KR880701809A (ko) 1988-11-05
DE3769980D1 (de) 1991-06-13
EP0287683A1 (fr) 1988-10-26
EP0287683A4 (fr) 1989-01-19

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